Sports-car maker benefiting from strong sales, currency strategy

STUTTGART, Germany—Porsche AG has found a new weapon, beside its mojo as an iconic sports-car brand, to help it race ahead of rivals: the swooning euro.

Earlier this year, Lutz Meschke, Porsche’s finance chief, was cautious about whether the car maker would be able to deliver on its goal of a 15% pretax profit margin. Slowing growth in China, economic turmoil in emerging markets and a consumer shift toward cheaper versions of...